Attachment for box-nailing machines.



P. J. HEALY.

ATTAGHMENT FOR BOX NAILING MACHINES,

APPLIOATION FILED JULY 15, 1913.

' Patented Dec. 2, 1913.

2 SHEETS-SHEET 1.

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P. J. HEALY. 4 ATTACHMENT FOR BOX NAILING MACHINES. APPLICATION FILED JULY 15, 1912.

1,080,060, Patented Dec;2;1913.

2 SHEETSSHEET 2.

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PHILIP J. HEALY, OF EAST ST. LOUIS, ILLINOIS.

ATTACHMENT FOR IBOX-NAILING MACHINES.

Specification of Letters Patent. Application filed July 15, 1913.

Patented Dec. 2, 1913. Serial No. 779,206.

To all whom it may concern:

Be it known that I, PHILl]? J. HEALY, a citizen of the United States, residing at East St. Louis, in the county of St. Clair and State of Illinois, have invented certain new and useful Improvements in Attachments for Box-Nailing Machines, of which the following is a specification.

This invention relates to new and useful improvements in box-nailing machines.

In box-nailing machines now in general use, much time is wasted in properly posi tioning the box relative to the nailing apparatus during the different necessary steps in the making of said box. That is to say, in the first step, a loose side is laid on the table, an end rested on said loose side, and V the loose side which is to be nailed to the end is positioned upon and then nailed to said end. The loose side which is on the table, is then removed and the nailed side and end is reversed. The loose side is then positioned on the-end and nailed thereto. It will thus be observed that these steps necessitate the positioning of the loose side in v the first step mentioned and then removing the same from the table to permit the box sections previously nailed to be reversed.

The principal object of the invention is therefore to provide an attachment for boxnailing machines which will eliminate the necessity of positioning and later removing said loose side, thereby reducing the number of steps or operations in the nailing of a box from seven to five and consequently saving much valuable timeand labor.

Another object of the invention is to provide an attachment of the character described which may be readily applied to boxnailing machines now in general use without altering said machines in any particular.

A still further object of the invention is to provide an attachment for the purpose mentioned which is adjustable to accommodate lumber of different thicknesses.

In the accompanying drawings, like characters of reference indicate like parts in the several views, and Figure 1 is, a detailfront elevation of a box-nailing machine showing the application of an attachment constructed in accordance with my invention. Fig. 2

' is a detail horizontal sectional view taken on the line 22 of Fig. 1. Fig. 3 is a detail side elevation showing the position of the box relative to the attachment during the first step of its formation. Fig. 4 is a similar view showing the position of the box relative to the attachment during the second step of its formation. Fig. 5 is an enlarged plan view of the attachment. Fig. 6 is a plan view of a modified form of bed bar, and Fig. 7 is a similar view of a modified form of bed plate used in connection with the bar shown in Fig. 6.

Like reference numerals designate corresponding parts in all the figures of the drawings.

In these drawings there is shown a boxnailing machine which includes the usual frame 6, work support or table 7 and the nailing mechanism 8. While the specific description of such a machine is not essential to the understanding of my invention, it is necessary to broadly refer to the above described parts.

My invention comprises an attachment which may be supported on the table 7 and readily secured to the frame 6. This arrangement is made in two forms by reason of the fact that certain box-nailing machines have the tables supported on a frame provided with centrally disposed openings while others have the tables supported on a plate unprovided with the openings. The form shown in Figs. 1 to 4 is the form which is preferably used for machines provided with these openings and on this frameI provide what I term a bed bar 10 having a beveled upper edge 11. Adjacent each end this bed bar is provided with a vertically disposed slot 12 having its outer portion recessed as at 13 to provide shoulders 14 whereon rests the head 15 of an adjustable screw 16. Each of these screws 16 is screwed into an L-shaped clamp 17 so arranged as to embrace the flange 18 of the frame of the box making machine. These clamps are each provided with a suitable clamping bolt 19 so that the flange 18 may be gripped between the bar 10 and the lateral portion of the clamp 17 The bar 10 is secured to the machine just above the table which supports the work and in spaced relation thereto. Between the bar 10 and the table is mounted a bed plate 20 having rearwardly extending arms 21 and this bed plate is of such thickness as to neatly fill the space between the bottom of the bar 10 and said table. Screwed into the bar 10 adjacent its lower edge are certain screw eyes 22 to each of which is secured one end of the spring 23, the other end of said spring being secured to a screw 24; carried by the inner end of the respective member 21. By this means the plate 20 is yieldably held in operative position on the table. For the purpose of limiting the forward movement of the plate 20 each of the members 21 is provided with a series of spaced openings 25 adapted to receive the stop pins 26 which, by the action of the springs 23 are forced against the rear side of the bar 10 and prevent further forward movement of the plate 20.

In the form shown in Figs. 5 and 6 the construction is exactly similar in all respects with the exception of the extensions 21 which are arranged outside of the clamps 17 while the first form has extensions intermediate the clamps.

In the operation, the machine having been set for the proper size of box a bed plate 20 of a thickness equal to the lumber used in the sides of the boxis adjusted beneath the bar 10, the latter being spaced above the table at suflicient distance to permit easy movement of said bed plate. The lumber for the end of the box is then set up on the bed plate 20 see Fig. 2, and the side lumber adjusted thereabove and nailed into position; In setting up this lumber the bevplaced upon the table and shoved back thus carrying with it the bed plate 20, see Fig.

4, the attached side taking the place of said bedplate. The other side is then in position on top of the end and nailed as usual after which the box is completed in the ordinary way.

It is to be noted that this device provides for various thicknesses of lumber and can readily be attached to or removed from any existing machine without any change whatever being made in such machine.

It will be obvious that many minor changes may be made in the form and construction of this invention without depart,- ing from the material principles thereof. It is not therefore desired to confine the invention to the exact form herein shown and described, but it is wished to include all such as come properly within the scope claimed.

Having thus described the invention, What is claimed as new, is

1. An attachment for box nailing machines comprising, a bed bar provided with means for securing it adjustably to the sides of a nailing machine above the table thereof, a rearwardly yielding bed plate slidably 1 mounted against the lower face of the said bar, and means for normally holding the bed plate in its forward position.

2. In a box-nailing machine attachment, a bed bar, clamps carried by the bed bar for securing the bar to the frame of the machine in spaced relation above the work table of the machine, a bed plate slidably mounted beneath said bar, springs constantly urging said bed plate forward and stop means to limit the forward motion of the bed plate.

3. In an attachment for box-nailing machines provided with a frame and a work table, a bed bar, a pair of clamps arranged to be secured to said frame, means for ad justably connecting the clamps and bar, a bed plate slidably mounted beneath said bar to lie on said table, arms extending r'earwardly of said bar from said plate, springs connecting the rear ends of said arms with said bar, and stop pins mounted on the arms and arranged to engage said bar and limit the forward movement of said plate.

4. The combination with a box-nailing machine provided with a frame having side flanges and further provided with a work table; of a bed plate slidably mounted on said table and provided with rearwardly ex tending arms, a bed bar extending across said frame above said plate, a pair of clamps arranged to engage the flanges of said frame,- means for adjustab'ly securing said bar to said clamps, and springs con neeting the rear ends of said arms with said bar and stop pins adjustably mounted on the arms and arranged to engage the rear side of said bar to limit the forward movement of the plate.

5. The combination, with a box nailing machine, of a rearwardly yielding bed plate at the rear edge of the machine table arranged to support the lower edge of a box end in the first step of nailing and then yield to the rearward movement of the nailed side and end inthe next step and ad jus'table means to limit the forward throw of said bed plate. 7

6. The combination, with a box nailing machine, of a vertically adjustable bed bar secured to the front of the frame and spaced above the rear edge of the table, and a rearwardly yielding bed plate slidable beneath the bedbar and arranged to support the lower edge of a box end in the first step of nailin and then to yield to the rearward movement of the nailed side and end in the edge of said bed bar, and means to limit next step. the forward thrust of the bed plate. 10

7 The combination, with a box nailing In testimony whereof I aflix my signature machine, of a bed bar vertical adjustable in presence of tWo Witnesses.

on the machine front at the rear edge of PHILIP J. HEALY. the table, and a rearwardly yielding bed Witnesses:

plate corresponding in thickness to the box GEO. L. PFEIFFENBERGER,

maberial and slidable beneath the lower A. GASSAWAY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

